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                <p style="border: 1px solid rgb(153, 100, 0); padding: 5px; background-color: rgb(255, 233, 191); margin-top: 20px; font-size: 65%; clear: both;"><strong>Note</strong>: I have made extensive references to information, related to Ruby, available in the public domain (wikis and the blogs, articles of various <span style="font-weight: bold;">Ruby Gurus</span>) and much of the material in the course here is drawn <strong>primarily</strong> from the <strong>Programming Ruby book</strong>, available from <a href="https://pragprog.com/book/ruby4/programming-ruby-1-9-2-0">The Pragmatic Bookshelf</a>. The following books have also been referred to: <a href="http://www.manning.com/black/">Ruby for Rails</a>, <a href="http://oreilly.com/catalog/9780596516178/">The Ruby Programming Language</a>, <a href="http://www.apress.com/book/view/9781590597668">Beginning Ruby</a>, <a href="http://pragprog.com/book/ltp2/learn-to-program">Learn to Program</a>, <a href="http://oreilly.com/catalog/9780596523695/">Ruby Cookbook</a> and <a href="http://www.informit.com/store/product.aspx?isbn=0672328844">The Ruby Way</a>; my acknowledgment and thanks to all of them.</p>
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